1 /*************************************************************************** 2 File : LogisticFit.h 3 Project : QtiPlot 4 -------------------------------------------------------------------- 5 Copyright : (C) 2007 by Ion Vasilief 6 Email (use @ for *) : ion_vasilief*yahoo.fr 7 Description : Logistic Fit class 8 9 ***************************************************************************/ 10 11 /*************************************************************************** 12 * * 13 * This program is free software; you can redistribute it and/or modify * 14 * it under the terms of the GNU General Public License as published by * 15 * the Free Software Foundation; either version 2 of the License, or * 16 * (at your option) any later version. * 17 * * 18 * This program is distributed in the hope that it will be useful, * 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 21 * GNU General Public License for more details. * 22 * * 23 * You should have received a copy of the GNU General Public License * 24 * along with this program; if not, write to the Free Software * 25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, * 26 * Boston, MA 02110-1301 USA * 27 * * 28 ***************************************************************************/ 29 #ifndef LOGISTICFIT_H 30 #define LOGISTICFIT_H 31 32 #include "Fit.h" 33 34 class LogisticFit : public Fit 35 { 36 Q_OBJECT 37 38 public: 39 LogisticFit(ApplicationWindow *parent, QwtPlotCurve *); 40 LogisticFit(ApplicationWindow *parent, QwtPlotCurve *, double, double); 41 LogisticFit(ApplicationWindow *parent, Graph *g); 42 LogisticFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle); 43 LogisticFit(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end); 44 LogisticFit(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int startRow = 1, int endRow = -1); 45 46 void guessInitialValues(); eval(double * par,double x)47 double eval(double *par, double x){return (par[0]-par[1])/(1+pow(x/par[2], par[3]))+par[1];}; 48 49 private: 50 void init(); 51 void calculateFitCurveData(double *X, double *Y); 52 }; 53 54 #endif 55